Native to the steamy, thick jungles of savage tropical wildlands, the giant heliotrope frog is a dangerous predator. It appears to be a black-skinned frog covered with lovely patterns of brilliant purple. A full grown specimen is roughly the size of an adult human.

Before attacking, this monster shifts up and down, left and right, on its legs. Creatures who witness this instinctive dance must make a saving throw to avoid becoming entranced by the frog’s hypnotic patterning. An entranced creature can take no action except staring in fascination for 2d4 rounds. A victim remains enchanted by the frog’s beauty even while it’s being devoured.